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What PSU should I get?

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  • Power Supplies
  • Components
Last response: in Components
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March 9, 2013 8:26:29 AM

Hi there I am kinda baffled by the amount of PSU's on the market and would appreciate it if someone could lead to a good PSU that can power a I7-3770K with a fully modular supply I have seen some 450-750 Watts PSU's but just want to know what would suit my ivy bridge processor the best and my Asus Motherboard P8Z77-M PRO ? My price range is minimal so what could be the most cheapest but most hard wearing on the market?

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March 9, 2013 8:48:28 AM

As long as it's not a generic name you've never heard of, I think just about any of the right size would suit your needs.

One note tho, if you think you'll need a consistent 450w, I'd get at least a 550-650w. You don't want to be pushing it to max on a regular basis, for several reasons others will probably explain, if not Google ;) .

I've personally had Fortron, Corsair and Seasonic and they've all worked great.
March 9, 2013 9:03:20 AM

JustLurking said:
As long as it's not a generic name you've never heard of, I think just about any of the right size would suit your needs.

One note tho, if you think you'll need a consistent 450w, I'd get at least a 550-650w. You don't want to be pushing it to max on a regular basis, for several reasons others will probably explain, if not Google ;) .

I've personally had Fortron, Corsair and Seasonic and they've all worked great.


Yeah thanks for the info also just a quick question what the does it mean by dual 12v rails and that type of stuff is this something I should be worried about when building my pc?
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March 9, 2013 9:24:09 AM

When you get into larger, beefier power supplies (in terms of current/power ratings), many manufacturers will use multiple rails. A mult-rail set-up is essentially where the PSU divides its 12 V output over several different sections (ie, seperate internal circuitry) in order to reduce stress/costs of components used within the power supply. Everyone has their own opinion on single-rail vs multiple rails (you can find many here on THW as well as many other places on the web). Myself, I prefer single-rail PSUs. Additionally, there are several PSU calculator pages/sites on the web, just tell it what's going to be in your rig and the calculator will tell you how much power you will need. And I agree with JustLurking in that you really want to stay with well-known, well-respected brand names. Other factors to consider would be the PSU's warranty duration and manufacturer's customer service reputation.

P.S. - One last piece of advice, if you want people to provide suggestions, you should provide a complete list of components you will be using in your build, along with a $ amount you can afford.
March 9, 2013 9:46:49 AM

Agree with Animal, I'd go with a nice strong (more amps) 12v rail. Skip that dual rail stuff.
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